FAO, Library and Documentation Systems Division, 1993
Buku Referensi
Haastert, H. F. W. M. van
Zuid-Nederlandsche Drukkerij, 1947
Buku Teks
Guiraud, Pierre
Utrecht Spectrum 1954
Buku Teks
Food and Agriculture Organization of the United Nations , 1985
Buku Teks
World Health Organization, 2002
Buku Teks